GB1380770A - Control of electrosmeldting - Google Patents

Control of electrosmeldting

Info

Publication number
GB1380770A
GB1380770A GB1331872A GB1331872A GB1380770A GB 1380770 A GB1380770 A GB 1380770A GB 1331872 A GB1331872 A GB 1331872A GB 1331872 A GB1331872 A GB 1331872A GB 1380770 A GB1380770 A GB 1380770A
Authority
GB
United Kingdom
Prior art keywords
electrode
ratio
unit
control
electro
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB1331872A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
CHUVASHSKY G UNI IM IN ULYANOV
Original Assignee
CHUVASHSKY G UNI IM IN ULYANOV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHUVASHSKY G UNI IM IN ULYANOV filed Critical CHUVASHSKY G UNI IM IN ULYANOV
Priority to GB1331872A priority Critical patent/GB1380770A/en
Priority to FR7212848A priority patent/FR2180200A5/en
Priority to DE19722218454 priority patent/DE2218454C3/en
Publication of GB1380770A publication Critical patent/GB1380770A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
    • H05B7/148—Automatic control of power
    • H05B7/152—Automatic control of power by electromechanical means for positioning of electrodes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
    • C22B9/16—Remelting metals
    • C22B9/18—Electroslag remelting
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/0019—Circuit arrangements
    • H05B3/0023—Circuit arrangements for heating by passing the current directly across the material to be heated
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B7/00—Heating by electric discharge
    • H05B7/02—Details
    • H05B7/144—Power supplies specially adapted for heating by electric discharge; Automatic control of power, e.g. by positioning of electrodes
    • H05B7/148—Automatic control of power
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Control Of Non-Electrical Variables (AREA)
  • Furnace Details (AREA)

Abstract

1380770 Automatic control of electro-slag refining CHUVASHSKY GOSUDARSTVENNY UNIVERSITET IMENI I N ULYANOVA 22 March 1972 13318/72 Heading G3R [Also in Division H5] In a method of controlling an electro-slag furnace having a consumable electrode 4 and a non-consumable electrode 9, an electrical parameter of each electrode circuit is measured and the ratio of said parameters determined in a unit 11, this ratio being compared, in comparator 13, with a reference value from a source 12, and a resultant error signal being used to control an electro-mechanical drive 15 which adjusts the position of the electrode 9. As shown, both electrodes 4, 9 are connected to a supply 6 and their respective currents I 1 , I 2 measured by transducers 16, 17 which feed corresponding voltages to the unit 11. The unit 11 incorporates a Schmidt trigger circuit Fig.3 (not shown) and produces an intermittent voltage of mean value proportional to the ratio of the parameters. This voltage is fed to control windings (49, 50) of a magnetic amplifier (51). Bias windings (55, 56) Fig.4 (not shown) of the magnetic amplifier (51) are supplied from the reference source 12. The amplifier's main windings (57, 58) are each arranged in circuit with a transistor (73 or 74), Fig.5 (not shown) to produce square pulses to trigger a thyristor (65 or 66). The thyristors (65, 66) control the current to a motor (75) which adjusts the position of the electrode 9 to keep the ratio of the parameters at the pre-set value. The electrode 9 need not be connected to the supply 6 in which case the signals fed to the unit 11 are proportional to voltages on the electrodes 4, 9 Fig.1 (not shown).
GB1331872A 1972-03-22 1972-03-22 Control of electrosmeldting Expired GB1380770A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1331872A GB1380770A (en) 1972-03-22 1972-03-22 Control of electrosmeldting
FR7212848A FR2180200A5 (en) 1972-03-22 1972-04-12 Electroslag process control - for maintaining constant position of non-consumable electrode in slag bath
DE19722218454 DE2218454C3 (en) 1972-04-17 Method and device for regulating electroslag remelting plants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1331872A GB1380770A (en) 1972-03-22 1972-03-22 Control of electrosmeldting

Publications (1)

Publication Number Publication Date
GB1380770A true GB1380770A (en) 1975-01-15

Family

ID=10020783

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1331872A Expired GB1380770A (en) 1972-03-22 1972-03-22 Control of electrosmeldting

Country Status (2)

Country Link
FR (1) FR2180200A5 (en)
GB (1) GB1380770A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003082A1 (en) * 1979-05-16 1980-11-27 Inst Elektroswarki Patona METHOD FOR REGULATING THE RELATIVE SHIFTING OF CASTING BLOCK AND CHOCOLATE AND CHOCOLATE FOR CARRYING OUT THIS METHOD

Also Published As

Publication number Publication date
DE2218454B2 (en) 1975-12-18
DE2218454A1 (en) 1973-10-25
FR2180200A5 (en) 1973-11-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee